Box making machine



(No Model.)

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J. s.- GIBBS. BOX MAKING MACHINE.

Patented Apr; 29, 1884'.

INVBNTOR WITNESSES:

ATTORNEY N. PETERS, mmulmm Vlahinlm n. a

(No Model.) 4 Sheets-Sheet 2.

' I INVENTOR ATTORNEY (No 'ModeL) I 4 Sheets-Shet 3.

' J.- s, GIBBS.

Box MAKING MACHINE. No. 297,925. i27

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m i LLs INVBNTOR WITNESSES f ATTORNEY v-[ithngnphen Wuhinglnn. 04 c (No Model.) 4 Sheets-Sheet 4.

J. s; GIBBS. v A BOX MAKING MACHINE. No. 297,925. 1 Patented Apr. 29, 1884.

INVBIFTOR ATTORNEY UNIT D STATES PATENT OF ICE.

STATES BOX MACHINE COMPANY, OF NEXV YORK, N. Y.

BOX-VMAKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 297,925, dated April 29, 1884.

Application filed September 17, 1883. (No model.)

To aZZ whom it may concern:

Be it known that I, J AOOB S. GIBBs, a citizen of the United States, residing at Bridgeport, in the county of Fairlield and State of Connecticut, have invented new and useful thereof, and by cutting simultaneously withv the miter-cut said mitered ends to form in and upon the same, in a. line across the ends,

a corresponding dovetail tongue and groove,

by which to secure one to the other and form a perfectly-locked box-corner without other fastening. i

In the drawings forming part of this specification, Figure 1 is a plan, and Fig. 9 is a perspective, view of a box-making machine embodying my improvements. Fig. 2 is a sectional View on line as m, Fig. 1. Figs. 3, 4, 5, 6, 7, and 8 are detail views.

In the drawings, A is the bed-frame of the machine, consisting of two parallel ways resting upon suitable legs, the upper edges of which are of inverted V-shape.

The machine is provided with two knifeslide frames, B and B, which are located on the said ways transversely, and which occupy positions parallel to each other. The frame B is bolted firmly to frame A at one end of the machine, and the frame B is movable on the aforesaid ways toward and from frame B, and is adapted to be secured in any desired position by a clamp -block, 33,- which is operated by a hand-screw, 32, (see Fig. 7,) to bind against an angular rib on the inner side of A and against the frame B. The aforesaid clamp-block and screw are provided at each end of frame B. The said frames B B are constructed in two longitudinal sections, (1 d,

tween the abutment c and clamp-bar 34, hereinafter referred to. This roll is an anti-friction bearing, over which boards may be passed to and from the clamps. Theinner opposite borders of the lower section, d, of said frames are of rabbet form, and the part of the upper section, d, which is bolted onto the lower one, projects over the .rabbetcut sufficiently to form between the faces of the two parts a three-sided right-angled groove in said opposite borders, which grooves serve as ways in which knife-slides c and 0 (one in each frame) have reciprocating motions, as hereinafterdescribed. A long,slightly-tapering gib, 21, is fitted into the base of one of the aforesaid grooves in frames B B, one end of which projects beyond the end of the latter, and, turning'at right angles, has 'a screw, 22, passing through its short arm so formed into the frame, whereby the gib is so adjusted between the edge of slide 0 and the frame as to cause the slide to move without lateral motion, and by means of which all wear of the slide is taken up.

The upper sections of the frames B B are constructed as follows: To provide for clamp- .ing rigidly therein a piece of board to be operated upon, in the position shown in dotted lines in Fig. 2, a fixed clamp-barabutment, e, extends from end to end of the sections d of said frames, and its upper side is of rabbet form, as shown in Fig. 6, and upon which lies the cam-bar e. The said camibar is undercut to let the-cam 0" on the canrlever 6 pass under it and be moved along to different positions to have its lifting power applied over the board beneath it. The ends of the cam- 1 bar 6 are connected with the ends of a clamp bar, 34, which extends under the abutment e by two bolts, 6 having thumb-nuts thereon, whereby the position of the clamp-bar is adjusted for boards of varying thickness. The form of the lower sections of the frames B B is clearly shown in the drawings. frame B has suitable bearings thereunder for shafts i and J, and the pinion 14 is supported in it on the stud 19 and the shipperrod 18. The lower section of frame B is provided with boxes 35, through which shaft J passes, and the end of the latter is-supported in a box on the standard K, at the end of the machine.

That of The cutting mechanism of the machine derives its movements from the shaft J, and hence it is essential that its support in the machine should be firm and strong, and that the driving power should be so applied to it that its rotation shall not be impeded under any proper resistance which the boards may offer to the cutters, and it will be seen that at times that resistance is quite considerable, since the cutters are forced by a quick movement across the grain of the board from one edge to the other; therefore said shaft is driven by the train of gears and shafting shown in detail in Figs. 3 and 4, and one end thereof is supported beyond the movable frame B.

The driving power of the machine is applied through pulley g, which is secured to the end of the shaft h, which is hung in boxes 8 8 on the side of the frame A, and has 011 it a gear, 9. The shaft J, which is required to rotate in opposite directions, has a spline groove in it, as shown in Fig. 1, and has secured on it, under frame B, the gears 13 and 15. A short shaft, *5, is hung in frame B, and has fixed on it the gear 10, engaging with the gear 9, and carries on it also the freely-rotating clutch-pinions 11 and 12 and the clutch 16, which is connected with the shaft 6 by a key and spline, in the usual way, and is movable between pinions 11 and 12, to be engaged with either one of them. The pinion 11 engages directly with gear 13; but the pinion 12 engages with an intermediate pinion, 14, and the latter engages with gear 15. Thus while shaft i rotates in one direction, sh aft J is made to rotate in opposite direction by shipping the clutch 16 to engage it with pinion 12 or 11. Vhen shaft J runs backward to backoff the cutter-slides after a board has been cut, it is desirable that it shall move faster than when turning in the other direction, and therefore gear 15 is of less diameter than gear 13.

The shipper-rod 18, having a pin, i in it, is engaged with a shipper-shaft, 28, by a slotted arm, 29. Shaft 28 is hung in frame B, and is adapted to rotate reciprocatingly by the action of the knife-slide in said frame and a spring, as hereinafter described, whereby the rod 18, having the clutch-fork 17 thereon, which engages with the clutch 16, and the latter, are given the motions above referred to. The shipper-shaft 28 projects up above a part of frame B, as shown, and has secured to it a shipper-catch, 24, having an arm thereon on which is pivoted a handle, 25, provided with a finger, c, which reaches OVCl one side of said arm and a little below it. A shipperplate, 23, is hung loosely on shaft 28, having thereon shoulders 36 and 37, adapted to strike against corresponding shoulders on the catch 24. A little space is left between the faces of the shoulders on said two parts, so that plate 23 may have a certain amount of free movement without actuating the catch 24. A spring, 27, having one end attached to frame B, has its other end engaging with plate 23 at such a point thereon that when said plate is turned on shaft 28 the engagingpoint of said spring is carried each side of the center line of said shaft. The end of plate 23 projects over the face of a part of the knife-slide c, as shown in Fig. A flat spring, 26, is secured by one end on frame B, under the said arm, on catch 24, and has an offset on it providing a shoulder, against which the said arm can strike.

A double-crank automatic trip-lever, 3 is hung on the end of frame B, its upper end passing through a long staple, and having a spring, 0 pressing it against said frame. One of the crank-arms of lever 30 lies on the end of spring 26, and the other reaches over the top of frame B, and when the clamp-bar e is dropped down, lever 30 is driven back, and afterward is, by spring 0*, moved toward the end of bar 0, and its arm is carried over the end of said bar.

The knife-slides c and c are fitted to slide in the frames B B by the rotation of shaft .T. Said slides are provided with racks, n, with which the gears 15 and 31. on said shaft engage. The gear 31 has a long hub, in which is fixed a key, (shown in dotted lines in Fig. 1,) and the latter engages in the groove 20 in said shaft. Gear 31 is located between the boxes 35 on frame B, and when the latter is moved on frame A, said gear slides 011 shaft J. The knife-slides are provided with a series of knives, 2 3 4 5, adapted to out each end of a board to a true miter, and to cut in one end thereof a groove, as in '0, Fig. 8, and on the other end a tongue, as in 12, same figure.

The knives 3 3 3 are secured on a block, 6, on the slide, and to prevent them from being thrown out of position by encountering knots in a board and by other similar obstacles, they are bedded on said block between the ribs 7 thereon, by the aid of which and the screws by which they are fastened to said block they are firmly held in position while cutting.

The slide 0 is provided with a shipper-pin, 0, adjustable to different positions thereon, and with a shipper-pin, 0, (shown in dotted lines in Fig. 1, and in full in Fig. 2,) located near the rear end of the slide. These pins 0 and 0 are adapted to encounter the end of plate 23 and swing it and shaft 28 to shift the clutch 16.

The operation is as follows: Shaft h and pulley 9 run continually in one direction. The position of the knife-slides in Fig. 9 is that to which they are brought after the knives have passed by a board, cutting it, as above described. Before the slides started for that position from the opposite ends of frames B B, and the board had been placed in the latter ready to be clamped, as shown in Fig. 2, the plate 23 and catch 24 were swung around (together with shaft 28) to carry clutch 16 to center, as in said figure. So swinging said plate brought the arm on catch 24 against the shoulder on spring 26 and the spring 27 to such a position that it held said arm there. 'At the same time (the ends of levers e not having been lifted to clamp the board) the cam-bar e occupied the position shown in Fig. 2. The operator then lifts up the ends of levers e elevating the cam-bar e to the position shown in Fig; 5, and in so doing the lever 30 is turned, depressing the end of spring 26 and letting spring 27 throw around plate 23 and shaft 28, carrying clutch 16 into engagement with pinion 11, and turning shaft J to carry the cutters through the boards, when pin 0 strikes plate 23, swinging it until the end of spring 27 passes by the center of shaft 28, when said spring completes the movement of the latter to carry clutch from pinion 11 into engagement with pinion 12, when the motion of shaft J is reversed and the knife-slides run back, and in so doing the pin 0 strikes plate 23, swinging it until the end of spring 27 passes shaft 28 again, when the latterswings the arm on catch 24 again against the shoulder on spring 26, as before, and the operations are repeated. The handle 25 may be employed to detach spring 26 from the arm on catch 24 by swinging it over until its finger z comes in contact with said spring, and then spring 27 will throw clutch 16 and start the machine, as before. The levers e are thrown down to release the board.

Certain features of this machine are described and shown in United States Patent No. 213,329, and such I do not claim as my invention; but

What I claim as my invention is- 1. The main bed-plate, the frames B and B thereon, having suitable clamping mechanism to retain the boards, reciprocating cutters in saidframes, and a shaft and change-gear for driving said cutters, the gear consisting of a large and a small wheel on the driving-shaft, similar wheels in reverse order on the counter-shaft, and a clutch adapted, as described, to throw one or the other system of gears into operation, all being in combination as set forth.

2. The main frame, the clamping-frame supported thereon, and suitable clamping mechanism .in said frame, and the reciprocating cutter-bar moving in said frame by means of suitable driving mechanism, said cutter-bar having raised ribs 7 thereon and knives B, se cured between and projecting obliquely beyond said ribs, all in combination as set forth.

3. The cutter-frame having angular bearings for sliding cutter-bar, as c, the cutter-bar arranged in said bearings, and a tapering gib,

21, in the bearing at the edge of the cutterbar, allin combination as set forth.-

JACOB S. GIBBS.

I Witnesses: V R. G. AMBLER,

O. D; LEET. 

